package com.supply.dl.utils;

import com.supply.dl.utils.utils.Logger;

import javax.net.ssl.*;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;
import java.util.Map.Entry;

/**
 * 忽略Https证书是否正确的Https Post请求工具类
 */
public class SDKHttpUtil
{
	private static final String TAG = "SDKHttpUtil";
	private static final String DEFAULT_CHARSET = "UTF-8"; // 默认字符集
	private static final String _GET = "GET"; // GET
	private static final String _POST = "POST";// POST

	/**
	 * 初始化http请求参数
	 */
	private static HttpURLConnection initHttp(String url, String method, Map<String, String> headers) throws IOException
	{
		URL _url = new URL(url);
		Logger.e(TAG, "tab url is " + _url);
		HttpURLConnection http = (HttpURLConnection) _url.openConnection();
		// 连接超时
		http.setConnectTimeout(25000);
		// 读取超时 --服务器响应比较慢，增大时间
		http.setReadTimeout(25000);
		http.setRequestMethod(method);
		http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		http.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");
		if (null != headers && !headers.isEmpty())
		{
			for (Entry<String, String> entry : headers.entrySet())
			{
				http.setRequestProperty(entry.getKey(), entry.getValue());
			}
		}
		http.setDoOutput(true);
		http.setDoInput(true);
		http.connect();
		return http;
	}

	/**
	 * 初始化http请求参数
	 */
	private static HttpsURLConnection initHttps(String url, String method, Map<String, String> headers) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException
	{
		TrustManager[] tm = { new MyX509TrustManager() };
		SSLContext sslContext = SSLContext.getInstance("SSL");
		sslContext.init(null, tm, new java.security.SecureRandom());
		// 从上述SSLContext对象中得到SSLSocketFactory对象
		SSLSocketFactory ssf = sslContext.getSocketFactory();
		Logger.e(TAG, "tab url is " + url);
		URL _url = new URL(url);
		HttpsURLConnection http = (HttpsURLConnection) _url.openConnection();
		// 设置域名校验
		http.setHostnameVerifier(new TrustAnyHostnameVerifier());
		http.setSSLSocketFactory(ssf);
		// 连接超时
		http.setConnectTimeout(25000);
		// 读取超时 --服务器响应比较慢，增大时间
		http.setReadTimeout(25000);
		http.setRequestMethod(method);
		http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		http.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");
		if (null != headers && !headers.isEmpty())
		{
			for (Entry<String, String> entry : headers.entrySet())
			{
				http.setRequestProperty(entry.getKey(), entry.getValue());
			}
		}
		http.setDoOutput(true);
		http.setDoInput(true);
		http.connect();
		return http;
	}

	/**
	 * get请求
	 */
	public static String get(String url, Map<String, String> params, Map<String, String> headers)
	{
		StringBuffer bufferRes = null;
		try
		{
			HttpURLConnection http = null;
			if (isHttps(url))
			{
				http = initHttps(initParams(url, params), _GET, headers);
			}
			else
			{
				http = initHttp(initParams(url, params), _GET, headers);
			}
			InputStream in = http.getInputStream();
			BufferedReader read = new BufferedReader(new InputStreamReader(in, DEFAULT_CHARSET));
			String valueString = null;
			bufferRes = new StringBuffer();
			while ((valueString = read.readLine()) != null)
			{
				bufferRes.append(valueString);
			}
			in.close();
			if (http != null)
			{
				http.disconnect();// 关闭连接
			}
			return bufferRes.toString();
		}
		catch (Exception e)
		{
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * get请求
	 */
	public static String get(String url)
	{
		return get(url, null);
	}

	/**
	 * get请求
	 */
	public static String get(String url, Map<String, String> params)
	{
		return get(url, params, null);
	}

	/**
	 * post请求
	 */
	public static String post(String url, String params, Map<String, String> headers)
	{
		StringBuffer bufferRes = null;
		try
		{
			HttpURLConnection http = null;
			if (isHttps(url))
			{
				http = initHttps(url, _POST, headers);
			}
			else
			{
				http = initHttp(url, _POST, headers);
			}
			OutputStream out = http.getOutputStream();
			out.write(params.getBytes(DEFAULT_CHARSET));
			out.flush();
			out.close();

			InputStream in = http.getInputStream();
			BufferedReader read = new BufferedReader(new InputStreamReader(in, DEFAULT_CHARSET));
			String valueString = null;
			bufferRes = new StringBuffer();
			while ((valueString = read.readLine()) != null)
			{
				bufferRes.append(valueString);
			}
			in.close();
			if (http != null)
			{
				http.disconnect();// 关闭连接
			}
			return bufferRes.toString();
		}
		catch (Exception e)
		{
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * post请求
	 */
	public static String post(String url, Map<String, String> params)
	{
		return post(url, map2Url(params), null);
	}

	/**
	 * post请求
	 */
	public static String post(String url, Map<String, String> params, Map<String, String> headers)
	{
		return post(url, map2Url(params), headers);
	}

	/**
	 * 初始化参数
	 */
	public static String initParams(String url, Map<String, String> params)
	{
		if (null == params || params.isEmpty())
		{
			return url;
		}
		StringBuilder sb = new StringBuilder(url);
		if (url.indexOf("?") == -1)
		{
			sb.append("?");
		}
		sb.append(map2Url(params));
		return sb.toString();
	}

	/**
	 * map转url参数
	 */
	public static String map2Url(Map<String, String> paramToMap)
	{
		if (null == paramToMap || paramToMap.isEmpty())
		{
			return null;
		}
		StringBuffer url = new StringBuffer();
		boolean isfist = true;
		for (Entry<String, String> entry : paramToMap.entrySet())
		{
			if (isfist)
			{
				isfist = false;
			}
			else
			{
				url.append("&");
			}
			url.append(entry.getKey()).append("=");
			String value = entry.getValue();
			if (null != value && !"".equals(value.trim()))
			{
				try
				{
					url.append(URLEncoder.encode(value, DEFAULT_CHARSET));
				}
				catch (UnsupportedEncodingException e)
				{
					e.printStackTrace();
				}
			}
		}
		return url.toString();
	}

	/**
	 * 检测是否https
	 */
	private static boolean isHttps(String url)
	{
		return url.startsWith("https");
	}

	/**
	 * 不进行主机名确认
	 */
	private static class TrustAnyHostnameVerifier implements HostnameVerifier
	{
		public boolean verify(String hostname, SSLSession session)
		{
			return true;
		}
	}

	/**
	 * 信任所有主机 对于任何证书都不做SSL检测
	 * 安全验证机制，而Android采用的是X509验证
	 */
	private static class MyX509TrustManager implements X509TrustManager
	{

		public X509Certificate[] getAcceptedIssuers()
		{
			return null;
		}

		@Override
		public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException
		{
		}

		@Override
		public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException
		{
		}
	}
}
